baber/WOPTO huggingface dataset:
Patent BR-112022022639-A2 (BR)
Title: Adaptador de ferramenta, e, conjunto de ferramenta de corte
Inventor: ALI THABIT
IPC: B23B29/08
Filed: 2021-05-27
Abstract: ADAPTADOR DE FERRAMENTA, E, CONJUNTO DE FERRAMENTA DE CORTE. Um adaptador de ferramenta tem uma porção de retenção frontal e uma porção de montagem traseira, em que a porção de retenção frontal tem uma garra de base, uma garra de aperto e uma cavidade receptora de inserto localizada entre elas e em que a porção de montagem traseira tem uma superfície de montagem traseira e um primeiro furo de fixação. Uma fenda primária separa a garra de base da garra de aperto e se comunica com a cavidade receptora de inserto e uma fenda secundária transversal à fenda primária separa a garra de aperto da porção de montagem traseira. O primeiro furo de fixação tem um primeiro eixo de furo que cruza a superfície de montagem traseira e a fenda secundária. Um conjunto de ferramenta de corte inclui uma haste de ferramenta e o adaptador de ferramenta preso a uma porção de montagem frontal da haste de ferramenta por meio de um primeiro parafuso de fixação que ocupa o primeiro furo de fixação e um primeiro furo de haste da porção de montagem frontal.
Patent BR-112023002584-A2 (BR)
Title: Composição fitoterapêutica
Inventor: LLUÍS MANENT TOMAS
IPC: A61K36/9068
Filed: 2021-08-13
Abstract: COMPOSIÇÃO FITOTERAPÊUTICA. Trata se de uma composição fitoterapêutica, para o tratamento de Covid 19 e outras infecções virais, compreendendo partes contendo nicotina de uma espécie do gênero Nicotiana, opcionalmente em combinação com uma ou mais das espécies Allium sativum, Zingiber officinale e Curcuma longa, na forma de uma formulação líquida nasal, líquida oral ou líquida ocular.
Patent BR-112023003614-A2 (BR)
Title: Domínio de ligação, ácido nucleico isolado, cassete e vetor de expressão, vírus recombinante e seu uso, composição farmacêutica, vacina baseada em aav5 para indução de imunidade específica ao sars-cov-2 e/ou prevenção de infecção por coronavírus relacionada ao sars-cov-2
Inventor: PROKOFYEV ALEXANDER VLADIMIROVICH
IPC: C07K14/165
Filed: 2021-08-27
Abstract: DOMÍNIO DE LIGAÇÃO, ÁCIDO NUCLEICO ISOLADO, CASSETE E VETOR DE EXPRESSÃO, VÍRUS RECOMBINANTE E SEU USO, COMPOSIÇÃO FARMACÊUTICA, VACINA BASEADA EM AAV5 PARA INDUÇÃO DE IMUNIDADE ESPECÍFICA AO SARS-COV-2 E/OU PREVENÇÃO DE INFECÇÃO POR CORONAVÍRUS RELACIONADA AO SARS-COV-2. O presente pedido refere-se aos campos de biotecnologia, imunologia, virologia, genética e biologia molecular. Mais especificamente, a presente invenção refere-se a um domínio de ligação ao receptor recombinante isolado da glicoproteína S (RBD-S) de SARS-CoV-2 (coronavírus 2 relacionado à síndrome respiratória aguda grave), a um ácido nucleico que codifica RBD-S de SARS-CoV-2, a um cassete de expressão e um vetor baseado nele, bem como a um vírus recombinante baseado em AAV5 (vírus adeno-associado sorotipo 5) para a indução de imunidade específica ao SARS-CoV-2 e/ou prevenção da infecção por coronavírus relacionada ao SARS-CoV-2, a uma vacina baseada em AAV5 para a indução de imunidade específica ao SARS-CoV-2 e/ou prevenção da infecção por coronavírus relacionada ao SARS-CoV-2 e à seu uso para a indução de imunidade específica ao SARS-CoV-2 e/ou prevenção da infecção por coronavírus relacionada ao SARS-CoV-2.
Patent BR-112023016920-A2 (BR)
Title: Amidas de ácido n-(1,3,4-oxadiazol-2-il)fenil carboxílico quirais e seu uso como herbicidas
Inventor: KÖHN ARNIM
IPC: C07D271/113
Filed: 2022-03-09
Abstract: amidas de ácido n-(1,3,4-oxadiazol-2-il)fenil carboxílico quirais e seu uso como herbicidas. amidas de ácido n-(1,3,4-oxadiazol-2-il)fenil carboxílico quirais da fórmula geral (i) e seu uso como herbicidas são descritas. nesta fórmula (i), x, z, r e r´ são radicais como alquila, cicloalquila e halogênio.
Patent BR-112023018014-A2 (BR)
Title: Formulação líquida, processo para fabricar micropartículas, uso de formulações, método para controlar fungos fitopatogênicos e sementes
Inventor: ANTOINE MAXIME CHARLES JOSEPH BEZIAU
IPC: A01P13/00
Filed: 2022-03-01
Abstract: formulação líquida, processo para fabricar micropartículas, uso de formulações, método para controlar fungos fitopatogênicos e sementes. micropartícula, em que a referida micropartícula contém uma ou mais substâncias ativas, a referida uma ou mais substâncias ativas sendo imiscível em água e sendo pesticida líquido (a 21 ºc) ou dissolvida em um solvente não aquoso s que é imiscível com água, e em que a referida micropartícula contém (i) pelo menos um fosfolipídio pl, (ii) pelo menos um esterol st.
Patent CZ-88794-A3 (CZ)
Title: Fungicides for the control of plant stalk breakage
Inventor: BRACCOLINO DIANE SUSAN
IPC: A01N37/44
Filed: 1992-10-09
Abstract: A method of controlling Take-all disease of plants by applying, preferably to the seed prior to planting, a fungicide of the formula <CHEM> wherein Z1 and Z2 are C or N and are part of an aromatic ring selected from benzene, pyridine, furan, pyrrole, pyrazole, thiazole, and isothiazole; A is selected from -C(X)-amine, -C(O)-SR3, -NH-C(X)R4, and -C(= NR3)-XR7; B is -Wm-Q(R2)3 or selected from o-tolyl, 1-naphthyl, 2-naphthyl, and 9-phenanthryl, each optionally substituted with halogen or R4; Q is C, Si, Ge, or Sn; W is -C(R3)pH(2-p)-; or when Q is C, W is selected from -C(R3)pH(2-p)-, -N(R3)mH(1-m)-, -S(O)p-, and -O-; X is O or S; n is 0, 1, 2, or 3; m is 0 or 1; p is 0, 1, or 2.
Patent SK-27294-A3 (SK)
Inventor: CERVINKA PETER
IPC: B25B23/153
Filed: 1994-03-04
Abstract: Momentový
kľúč
najmá
na
zapaľovacie
sviečky
má
s
jedným
koncom
plášťa
(6)
v
tvare
Sesťhrannej
rúrky
spojený
krúžok
(2),
do
ktorého
je
vsunutá
vnútorná
časť
hriadeľa
(1).
Na
nej
je
nasunutá
pružina
(3)
tak,
že
sa
jedným
koncom
opiera
o
vnútornú
časť
krúžka
(2)
a
druhým
koncom
o
zadnú
časť
čelného
ozubca
(4),
ktorý
je
nasunutý
tiež
na
hriadeli
(1).
Hriadeľ
(1)
má
v
blízkosti
vsunutého
konca
otvor
(9),
v
ktorom
je
kolmo
na
os
hriadeľa
(1)
vsunutý
čap
(5),
ktorá»
časti
vstupujúce
z
hriadeľa
(1)
zapadajú
v
pokojovej
polohe
*
do
žliabkov
(10)
čelného
ozubca
(4).
Na
vonkajšiu
časť
hriadeľa
(21)
sú
pripojená
diely
prenášajúce
krútiaci
F
moment
na
hriadeľ
(1).
Patent AT-516881-A3 (AT)
Title: Verbindungssystem für streifenförmige Platten
Inventor: Eva-Christine Benesch
IPC: G09F7/18
Filed: 2016-02-18
Abstract: Die Erfindung bezieht sich auf ein Verbindungssystem streifenförmiger Platten (1), (6) zur Ausbildung verschiedenster dreidimensionale Körper oder Körpergerippe, die in beliebigen Bereichen zum Einsatz kommen können, beispielsweise im Garten- oder im Wohnbereich als Rankgitter für Grünpflanzen. Das Verbindungssystem weist speziell geformte Aufnahmeöffnungen in einer Aufnahme-Platte (1) sowie passgenaue Endteile (9) und Schlitze (6) einer Einsteck-Platte (5) auf. Eine Einsteck-Platte (5) wird mit dem Endteil (9) in die Aufnahmeöffnung der Aufnahme-Platte (1) gesteckt und greift dann durch Schlitze (6) beim Verdrehen um 90° in die Aufnahme-Platte (1) ein, wodurch die gewünschte Stabilität der Verbindung herstellt wird.
Patent CH-645504G-A3 (CH)
IPC: G04G13/02
Filed: 1980-08-18
Abstract: An electronic timepiece has a display unit capable of displaying different times in two or more regions in the world, an alarm time setting circuit capable of setting alarm times in the respective regions, and a buzzer device for sounding, at alarm times, different alarm sounds associated with the respective regions.
Patent CZ-222692-A3 (CZ)
Inventor: SIKORA EUGEN ING
IPC: F23C1/12
Filed: 1992-07-16
Abstract: Reaktivní hnědouhelný prach je dávkován ve stechiometrickém
množství v interavlu do 5 sekund mezi jednotlivými
vstřiky hmotného paprsku reaktivní látky proti sobě z protilehlých
stran.
Patent CS-254991-A3 (CS)
Title: Process for preparing 17-oxosteroids
Inventor: WEBER ALFRED
IPC: C12R1/33
Filed: 1991-08-16
Abstract: Described is a method of preparing 17-oxosteroids by the fermentative oxidation of 17 beta -hydroxysteroids, characterized in that a bacterial culture of the species Mycobacterium spec. NRRL B-3805, Mycobacterium spec. NRRL B-3683, Mycobacterium phlei NRRL B-8154 or Mycobacterium fortuitum NRRL B-8153 is used for the fermentation.
Patent CZ-256092-A3 (CZ)
Title: Process of selective alkylation of polycyclic aromatic compounds
Inventor: NOTTE PATRICK PIERRE BERNARD
IPC: C07B61/00
Filed: 1992-08-20
Abstract: A catalytic process is described for the selective alkylation of a polycyclic aromatic compound comprising reacting the polycyclic aromatic compound with an alkylating agent in the presence of a catalyst to thereby yield the desired alkyl substituted polycyclic aromatic compound with improved selectivity and improved yield. The process is particularly suitable for the selective dialkylation of polycyclic aromatic compounds in the para-, respectively beta-positions. The catalyst is a protonic form of a mordenite having an atomic Si/Al ratio of at least 5:1, comprising additional metal species in a molar ratio metal (in the metal species)/aluminium of at least 0.10 and having a biphenyl sorption of at least 0.05 g biphenyl per g of catalyst.
Patent CZ-267591-A3 (CZ)
Inventor: HUSAR JAN
IPC: E01B9/60
Filed: 1991-08-28
Abstract: Zařízení je tvořené nosným šasi, které sestává z pásoviny
(2) a nosných profilů (3), jež jsou zality do betonového panelu
(1). Toto tvoří základní nosný panel, na němž k připevnění
kolejnic (9) slouží pákové úchyty (4) a táhla (5).
Na obnažené části nosných pofilů (3) je položen boční příložný
panel (8), který je zajištěn třmenem (6) a maticí (7).
Patent CS-274291-A3 (CS)
Title: Material for bone implants based on ceramics and process for preparing thereof
Inventor: BAUER HANS JORG DIPL ING
IPC: A61C8/00
Filed: 1991-09-06
Abstract: The invention relates to an implant material based on natural bone, which material is a sintered ceramic material in which the porous fine structure of the bone is present in essentially unchanged form and which comprises more than 99% of hydroxyapatite.
Patent CZ-396792-A3 (CZ)
Title: Process and apparatus for producing ozone
Inventor: GANSCH HORST
IPC: C01B13/10
Filed: 1992-12-29
Abstract: The invention relates to a process and an apparatus for producing ozone from an oxygen-containing feed gas. In order to achieve a reduction of the operating temperature of the ozone generator 1 and thus an increase in the ozone yield, it is proposed that the oxygen-containing feed gas be cooled with a gas liquefied to a very low temperature. To this end, liquid oxygen from a liquid-oxygen tank 19 is preferably supplied via line 14 to the feeder 5 for the feed gas. <IMAGE>
Patent CZ-504790-A3 (CZ)
Title: Polymetallic catalysts, process for preparing such catalysts and polymers prepared by making use of those catalysts
Inventor: SMITH CRYSTAL A
IPC: C08F10/00
Filed: 1990-10-17
Abstract: Disclosed is a polymetallic supported catalyst component comprising an activated anhydrous MgCl2 solid support which has been treated with at least one treatment of at least two halogen-containing transition metal compounds, wherein one is a halogen-containing titanium metal compound and one is a halogen-containing non-titanium transition metal compound, optionally, in the presence of an electron donor and the processes for producing the component. A catalyst for the polymerization of at least one alpha-olefin of the formula CH2=CHR, where R is H or a C1-12 branched or straight chain alkyl or substituted or unsubstituted cycloalkyl, by reacting this supported catalyst component with an organometallic cocatalyst, optionally in the presence of an electron donor, and the polymerization of at least one alpha-olefin with the catalyst are also disclosed. The resulting Polymers, particularly propylene polymers, have a controllable atactic content, which is expressed herein in terms of its xylene solubility at room temperature (XSRT), wherein the ratio of the I.V. of the XSRT fraction to the I.V. of the bulk polymer is greater than or equal to 0.50.
Patent CZ-110797-A3 (CZ)
Inventor: SRAMEK RUDOLF ING
IPC: B65H54/80
Filed: 1997-04-10
Abstract: Vynález se týká plnění zásobníku /1 / pramene,
zejména plochého pramene, pramenem
/2/ textilních vláken v plnicím ústrojí
textilního stroje, vyrábějícího pramen /2/,
přičemž plochý zásobník /1/ obsahuje ve
svislém směru přestavitelně uložené pohyblivé
dno /4 /, které je alespoň během plnění plochého
zásobníku /1/ spřaženo se zařízením
pro vyvozování a řízení pohybu pohyblivého
dna /4/. Pohyblivé dno /4/ plochého zásobníku
/1 / se zvedne do své horní polohy a
do prostoru nad pohyblivým dnem /4/ plochého
zásobníku /1/ se pod tlakem ukládá
pramen vláken, přičemž pohyblivé dno /4/ se
spouští, načež se před dosažením dolní polohy
pohyblivého dna /4/ spouštěcí pohyb pohyblivého
dna /4/ urychlí až se pohyblivé dno
/4/ zastaví ve své dolní poloze, čímž se dosáhne
snížení tlaku pramene /2/ v poslední fázi
plnění plochého zásobníku /1 / a zabrání se
tak nadměrnému přesahu uloženého pramene
/2/ vláken nad horní okraj plochého zásobníku
/1
Patent CZ-9901274-A3 (CZ)
Inventor: HAJEK LIBOR ING
IPC: G09F13/18
Filed: 1999-04-12
Abstract: Výstražná světelná značka sestává ze světelného obvodu (1), 
vybaveného blikajícími LED diodami (7) a bezkontaktním 
přerušovačem (2), dále připojeného k napájecímu akumulátoru 
(4) přes programovatelné spínací hodiny (3).
Patent CZ-162994-A3 (CZ)
Title: Process for separating particles in a liquid heterogeneous mixture and apparatus for making the same
Inventor: DUCZMAL TOMASZ
IPC: B04C3/06
Filed: 1992-12-10
Abstract: An apparatus and a process for separating particles in a slurry based on different physical, magnetic and/or chemical properties of the particles, the slurry including a mixture of solid particles and/or liqid particles which are immiscible in the slurry. The process comprises: tangentially introducing a stream of the slurry into a cylindrical chamber having a cylindrical inner wall with sufficient volume and pressure to develop a vortex in the slurry which extends downwardly from an upper end; introducing air into the stream during at least a portion of its upward travel, the air being introduced to the stream through means located at the chamber inner wall and for developing the air bubbles which move into the stream; the chamber being of a height sufficient to allow the stream to develop into a whirlpool at the chamber upper end; directing the whirlpool stream outwardly at the open end into a catch basin surrounding the open end; and separating the floating air bubbles with lighter hydrophobic particles from the heavier particles by collecting outwardly floating air bubbles with an upper zone of the catch basin.
Patent CZ-169394-A3 (CZ)
Title: Silicon granulate for silicification of building elements made of carbon or mixtures of silicon carbide and carbon, process for producing such granulate and process for producing silicon-infiltrated building elements of silicon carbide
Inventor: GORL PETER
IPC: C01B32/956
Filed: 1994-07-13
Abstract: The proposed process for producing structural element from silicon infiltrated silicon carbide is characterized in that shaped bodies of carbon or a mixture of silicon carbide and carbon are put onto a burning furnace baking plate a by baking they are infiltrated with silicon, wherein silicon granulate is used as a silicon source. Said silicon granulate particles are provided with a coating that contains carbon or a carbon-releasing compound, a binding agent and boron nitride.
Patent CZ-200235-A3 (CZ)
Title: Preliminary prepared gel mask
Inventor: DECKNER GEORGE ENDEL
IPC: A61Q3/02
Filed: 2000-06-30
Abstract: A pre-formed, sheet device comprising; (a) less than 10 % of a polysaccharide mixture consisting of; (i) a red seaweed polysaccharide; (ii) a mannose containing polysaccharide selected from a galactomannan, glucomannan, and derivatives or mixtures thereof and; (iii) a fermentation polysaccharide, or derivatives thereof; and (b) from about 30 % to about 99.5 % of water; wherein the device comprises less than 10 % total polysaccharide. The pre-formed, sheet devices of the invention are suitable for topical application and display desirable amounts of syneresis and/or improved mechanical properties such as strength or flexibility, as well as excellent moisturisation, hydration and cooling benefits. Further, the devices of the present invention are easy to handle, unobtrusive and conform to the contours of a target surface when applied.
Patent CZ-202118-A3 (CZ)
Inventor: TYRPA MIROSLAV
IPC: G07C9/23
Filed: 2021-01-18
Abstract: Elektronický zabezpečovací systém tvořený přenosným elektronickým ovládačem (1) vybaveným vnitřní pamětí (2) pro uložení jednorázového ovládacího kódu (3) a případně i identifikátoru (10) a blokačního kódu (11), a samostatnou, funkčně na něj napojenou alespoň jednou elektronickou uvolňovací jednotkou (4), tvořenou centrální paměti (5) určenou pro uložení souboru (8) záložních jednorázových ovládacích kódů (3'), případně i identifikátoru (10) a výkonovým členem (7) a řídicím procesorem (6), zabezpečujícím funkční komunikaci s centrální pamětí (5) elektronické uvolňovací jednotky (4), s vnitřní pamětí (2) přenosného elektronického ovládače (1) a s výkonovým členem (7). Výkonový člen (7) je uveden do činnosti zjistí-li řídicí procesor (6) v souboru (8) přítomnost dosud nepoužitého záložního jednorázového ovládacího kódu (3') shodného s jednorázovým ovládacím kódem (3) uloženým ve vnitřní paměti (2) přenosného elektronického ovládače (1). Systém je určen zejména pro objekty a zařízení s požadavkem na maximální stupeň zabezpečení.
Patent CZ-202278-A3 (CZ)
Inventor: HLAVÁČ ZBYNĚK
IPC: G21C17/06
Filed: 2022-02-18
Abstract: Metoda měření tlaku uvnitř palivových proutků spočívá v tom, že k výpočtu tlaku a posouzení těsnosti proutků využívá nedestruktivně měřené rezonanční frekvence proutku. Pro upřesnění výpočtu metoda vyžaduje zjištění dalších parametrů palivového proutku, především tloušťky stěny proutku, rychlosti šíření ultrazvukového signálu tělem proutku, aktuální teploty a stupně vyhoření palivového proutku, míry oxidace stěny proutku a také předpokládaného tlaku uvnitř či vně proutku.
Patent CZ-208396-A3 (CZ)
Title: Process for preparing detergent granules
Inventor: AOUAD YOUSEF GEORGES
IPC: C11D11/00
Filed: 1995-01-13
Abstract: The present invention relates to a process for making a detergent component having a bulk density of at least 650 g/l, which comprises the steps of:   (i) forming a structured paste comprising a uniform mixture of, by weight;     (a) from 5% to 40% of water; (b) from 30% to 90% of an ingredient selected from the group consisting of anionic, zwitterionic, cationic, ampholytic and nonionic surfactant; water-soluble organic polymer; and mixtures thereof;   (c) from 1% to 20% of water-soluble silicate salt;   (d) at least 30% of linear alkyl benzene sulphonate; in a continuous process; wherein the maximum pressure reached in step (i) is not less than 10 bar; and (ii) subsequently dispersing said structured paste with one or more builders in powder form; in a high shear mixer at a tip speed of greater than 10 meters per second; wherein the ratio of the structured paste to the builder powder is from 9:1 to 1:5.
Patent CZ-236193-A3 (CZ)
Title: Cover strip of a channel sunk in a vehicle roof
Inventor: ZIEGERT MARTIN
IPC: B62D27/06
Filed: 1993-11-04
Abstract: 2.1 A covering strip 4 for covering a channel 1 in a vehicle roof is to be designed in such a way that it performs its function better, is easier to assemble and is made cheaper. 2.2 According to the invention, a spring element 7 which is locked onto a limb of the U-shaped covering strip 4 is equipped in its end face regions with securing tongues 11, 12 which rest against contact surfaces of the flap 5 when the latter is open and closed and reliably fix the position of the said flap. The spring element 7 also has supporting limbs 9, 10 at both ends, which grip from below the end regions of the flap and the adjacent edges of the covering strip 4 so that the outwardly facing surfaces of the covering strip 4 and the flap 5 are aligned without formation of a shoulder. 2.3 The covering strip 4 according to the invention is used in cars in particular. <IMAGE>
Patent CZ-239193-A3 (CZ)
Title: Press with at least two pressure spaces
Inventor: WILD HERBERT DIPL ING
IPC: B30B7/04
Filed: 1993-11-09
Abstract: A press for pressing plate-like work pieces especially made of wood or wood-like materials has at least two press chambers (5, 6) arranged one above the other, of which each press chamber (5, 6) is situated between a fixed pressing table (2, 3) and a lifting table (4) movable relative thereto in the pressing direction. The movable lifting table (4) is driven by lifting cylinders (7) supported by thrust bearings fixed to the frame. The particular feature of this press resides in the fact that in each case a first press chamber (5) and a second press chamber (6) are situated between an upper fixed pressing table (2) and a lower fixed pressing table (3) and these two press chambers (5, 6) are separated from one another by a lifting table (4) arranged therebetween. Consequently, the two press chambers (5, 6) can be alternately opened and closed via the lifting cylinders (7) connected to the lifting table (4). <IMAGE>
Patent CZ-254093-A3 (CZ)
Title: Protective circuit breaker of a line with magnetically protected field of a phase conductor and a non-protected field of the neutral conductor
Inventor: REIL FRANZ ING
IPC: H01H71/00
Filed: 1993-11-25
Abstract: The line protection circuit breaker has a thermally and magnetically protected outer conductor pole, an unprotected neutral conductor pole and an arc extinguishing device for the outer conductor pole. A contact apparatus of the outer conductor pole is arranged essentially parallel alongside a contact apparatus of the neutral conductor pole, is separated from said neutral conductor pole by an inner shell, and is coupled to said neutral conductor pole. The contact apparatus (53, 55) of the neutral conductor pole is arranged on the same side, in front of the arc extinguishing device (24), as the contact apparatus (18, 19) of the outer conductor pole, and is separated by a bent inner shell from the contact apparatus (18, 19) of the outer conductor pole and from the arc extinguishing device (24). In consequence it is possible to provide a line protection circuit breaker whose structural size does not exceed that of a line protection circuit breaker without any contact apparatus for a neutral conductor pole, and whose performance (power) is not significantly reduced. <IMAGE>
Patent CZ-9902817-A3 (CZ)
Title: Case for air-conditioning apparatuses
Inventor: FRICK EDMUND
IPC: F24F13/20
Filed: 1999-08-09
Abstract: Disclosed is a case for air-conditioning apparatus comprising a frame (1) having the form of preferably a rectangular the columns and beams of which are made of a sheet metal hollow section. The frame (1) is air-tight enclosed by covers (3) attached thereto. The hollow section is provided in the direction of slide-in arrows (2) that are perpendicular to the individual covers (3) with undercut (4) serving for fixing a spring element (11) prestressed in the direction toward the frame (1), and a stop strip (5) against which a packing (16) and at least one cover (3) are borne. The stop strips (5) of the hollow section disposed on the frame (1) inner side form a right angle with each other and at least in proximity of their free longitudinal edges, there are formed by the stop strip (5) sheet metal portions (21, 22) fitting to each another by substantially flat manner and extending substantially up to the projecting corner (24) thereof.